package edu.mse.camel.client.playback;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

import edu.mse.camel.client.eventbus.pubsub.EventManager;
import edu.mse.camel.client.events.EventIDs;
import edu.mse.camel.client.playback.handler.ReceiveGenericPeerEventHandler;
import edu.mse.camel.client.playback.handler.ResourceUpdateHandler;
import edu.mse.camel.client.playback.views.PlaybackMessageList;

/**
 * The activator class controls the plug-in life cycle
 */
public class Activator extends AbstractUIPlugin {

	// The plug-in ID
	public static final String PLUGIN_ID = "edu.mse.camel.client.playback";

	// The shared instance
	private static Activator plugin;
	
	private final ReceiveGenericPeerEventHandler rgpHandler = new ReceiveGenericPeerEventHandler();
	private final ResourceUpdateHandler ruHandler = new ResourceUpdateHandler();
	
	/**
	 * The constructor
	 */
	public Activator() {
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
	 */
	public void start(BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
		PlaybackMessageList.getInstance().getMessages().clear();
		EventManager.getInstance().subscribeTo(EventIDs.RECEIVE_CHAT_EVENT, rgpHandler);
		EventManager.getInstance().subscribeTo(EventIDs.RECEIVE_PEER_EVENT, rgpHandler);
		EventManager.getInstance().subscribeTo(EventIDs.NOTIFY_SYNC_FINISHED_EVENT, rgpHandler);
		EventManager.getInstance().subscribeTo(EventIDs.JOINSESSION_EVENT, rgpHandler);
		EventManager.getInstance().subscribeTo(EventIDs.LEAVE_SESSION_EVENT, rgpHandler);
		EventManager.getInstance().subscribeTo(EventIDs.BASELINE_RESOURCE_UPDATE_EVENT, ruHandler);
	}

	/*
	 * (non-Javadoc)
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
	 */
	public void stop(BundleContext context) throws Exception {
		plugin = null;
		super.stop(context);
	}

	/**
	 * Returns the shared instance
	 *
	 * @return the shared instance
	 */
	public static Activator getDefault() {
		return plugin;
	}

	/**
	 * Returns an image descriptor for the image file at the given
	 * plug-in relative path
	 *
	 * @param path the path
	 * @return the image descriptor
	 */
	public static ImageDescriptor getImageDescriptor(String path) {
		return imageDescriptorFromPlugin(PLUGIN_ID, path);
	}
}
